Added initial unit testing files for the pgsql driver.

framework/yii/db/pgsql/Schema.php

+<?php
+/**
+ * @link http://www.yiiframework.com/
+ * @copyright Copyright (c) 2008 Yii Software LLC
+ * @license http://www.yiiframework.com/license/
+ */
+
+namespace yii\db\pgsql;
+
+use yii\db\TableSchema;
+use yii\db\ColumnSchema;
+
+/**
+ * Schema is the class for retrieving metadata from a PostgreSQL database (version 9.x and above).
+ *
+ * @author Gevik Babakhani <gevikb@gmail.com>
+ * @since 2.0
+ */
+class Schema extends \yii\db\Schema
+{
+	/**
+	 * Loads the metadata for the specified table.
+	 * @param string $name table name
+	 * @return TableSchema|null driver dependent table metadata. Null if the table does not exist.
+	 */
+	public function loadTableSchema($name)
+	{
+		$table = new TableSchema();
+		$this->resolveTableNames($table, $name);
+		$this->findPrimaryKeys($table);
+		if ($this->findColumns($table)) {
+			$this->findForeignKeys($table);
+			return $table;
+		}
+	} 
+}
\ No newline at end of file

tests/unit/data/config.php

@@ -20,5 +20,11 @@ return array(
 			'password' => '',
 			'fixture' => __DIR__ . '/mssql.sql',
 		),
+                'pgsql' => array(
+			'dsn' => 'pgsql:host=localhost;dbname=yiitest;port=5432',
+			'username' => 'postgres',
+			'password' => 'postgres',
+			'fixture' => __DIR__ . '/postgres.sql',
+                )
     )
 );

tests/unit/framework/db/pgsql/PostgreSQLActiveRecordTest.php

+<?php
+
+namespace yiiunit\framework\db\pgsql;
+
+use yiiunit\framework\db\ActiveRecordTest;
+
+class PostgreSQLActiveRecordTest extends ActiveRecordTest
+{
+    protected function setUp()
+    {
+        $this->driverName = 'pgsql';
+        parent::setUp();
+    }
+}

tests/unit/framework/db/pgsql/PostgreSQLConnectionTest.php

+<?php
+
+namespace yiiunit\framework\db\pgsql;
+
+use yiiunit\framework\db\ConnectionTest;
+
+class PostgreSQLConnectionTest extends ConnectionTest
+{
+    public function setUp()
+    {
+        $this->driverName = 'pgsql';
+        parent::setUp();
+    }
+    
+    public function testConnection() {
+        $connection = $this->getConnection(true);        
+    }
+}